/*--
$Id: JAXPParserFactory.java,v 1.5 2004/02/27 21:08:47 jhunter Exp $
Copyright (C) 2000-2004 Jason Hunter & Brett McLaughlin.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
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notice, this list of conditions, and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions, and the disclaimer that follows
these conditions in the documentation and/or other materials
provided with the distribution.
3. The name "JDOM" must not be used to endorse or promote products
derived from this software without prior written permission. For
written permission, please contact <request_AT_jdom_DOT_org>.
4. Products derived from this software may not be called "JDOM", nor
may "JDOM" appear in their name, without prior written permission
from the JDOM Project Management <request_AT_jdom_DOT_org>.
In addition, we request (but do not require) that you include in the
end-user documentation provided with the redistribution and/or in the
software itself an acknowledgement equivalent to the following:
"This product includes software developed by the
JDOM Project (http://www.jdom.org/)."
Alternatively, the acknowledgment may be graphical using the logos
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SUCH DAMAGE.
This software consists of voluntary contributions made by many
individuals on behalf of the JDOM Project and was originally
created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
Brett McLaughlin <brett_AT_jdom_DOT_org>. For more information
on the JDOM Project, please see <http://www.jdom.org/>.
*/
package org.jdom.input;
import java.util.*;
import javax.xml.parsers.*;
import org.jdom.*;
import org.xml.sax.*;
/**
* A non-public utility class to allocate JAXP SAX parsers.
*
* @version $Revision: 1.5 $, $Date: 2004/02/27 21:08:47 $
* @author Laurent Bihanic
*/
class JAXPParserFactory { // package protected
private static final String CVS_ID =
"@(#) $RCSfile: JAXPParserFactory.java,v $ $Revision: 1.5 $ $Date: 2004/02/27 21:08:47 $ $Name: jdom_1_0 $";
/** JAXP 1.2 schema language property id. */
private static final String JAXP_SCHEMA_LANGUAGE_PROPERTY =
"http://java.sun.com/xml/jaxp/properties/schemaLanguage";
/** JAXP 1.2 schema location property id. */
private static final String JAXP_SCHEMA_LOCATION_PROPERTY =
"http://java.sun.com/xml/jaxp/properties/schemaSource";
/**
* Private constructor to forbid allocating instances of this utility
* class.
*/
private JAXPParserFactory() {
// Never called.
}
/* Implementor's note regarding createParser() design: The features and
properties are normally set in SAXBuilder, but we take them in
createParser() as well because some features or properties may need to be
applied during the JAXP parser construction. Today, for example, properties
is used as it's the only way to configure schema validation: JAXP defines
schema validation properties but SAX does not. This reflects in the Apache
Xerces implementation where the SAXParser implementation supports the JAXP
properties but the XMLReader does not. Hence, configuring schema validation
must be done on the SAXParser object which is only visible in
JAXParserFactory. Features is also passed in case some future JAXP release
defines JAXP-specific features.
*/
/**
* Creates a SAX parser allocated through the configured JAXP SAX
* parser factory.
*
* @param validating whether a validating parser is requested.
* @param features the user-defined SAX features.
* @param properties the user-defined SAX properties.
*
* @return a configured XMLReader.
*
* @throws JDOMException if any error occurred when allocating or
* configuring the JAXP SAX parser.
*/
public static XMLReader createParser(boolean validating,
Map features, Map properties) throws JDOMException {
try {
SAXParser parser = null;
// Allocate and configure JAXP SAX parser factory.
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setValidating(validating);
factory.setNamespaceAware(true);
try {
// Allocate parser.
parser = factory.newSAXParser();
}
catch (ParserConfigurationException e) {
throw new JDOMException("Could not allocate JAXP SAX Parser", e);
}
// Set user-defined JAXP properties (if any)
setProperty(parser, properties, JAXP_SCHEMA_LANGUAGE_PROPERTY);
setProperty(parser, properties, JAXP_SCHEMA_LOCATION_PROPERTY);
// Return configured SAX XMLReader.
return parser.getXMLReader();
}
catch (SAXException e) {
throw new JDOMException("Could not allocate JAXP SAX Parser", e);
}
}
/**
* Sets a property on a JAXP SAX parser object if and only if it
* is declared in the user-defined properties.
*
* @param parser the JAXP SAX parser to configure.
* @param properties the user-defined SAX properties.
* @param name the name of the property to set.
*
* @throws JDOMException if any error occurred while configuring
* the property.
*/
private static void setProperty(SAXParser parser,
Map properties, String name) throws JDOMException {
try {
if (properties.containsKey(name)) {
parser.setProperty(name, properties.get(name));
}
}
catch (SAXNotSupportedException e) {
throw new JDOMException(
name + " property not supported for JAXP parser " +
parser.getClass().getName());
}
catch (SAXNotRecognizedException e) {
throw new JDOMException(
name + " property not recognized for JAXP parser " +
parser.getClass().getName());
}
}
}